Plow.



.E. W. BENSON.

PLOW.' APPLICATION FILED SEPT. Is, I9I5.

,2 IIILIPIIIIIIIIIIIIIIIIIliii share or point,

EDGAR W. BENSON, OF RICHMOND, CALIFO RNIA, ASSIGNOR OF ONE-HALF TOGEORGE X. FLEMING, OF SACRAMENTO, CALIFORNIA.

PLOW.

Specification of Letters Iatent.

Patented ree. se, asie.

Application filed September 18, 1915. Serial No. 51,393.

To all whom t may concern.'

Be it known that I, EDGAR W. BnNsoN, a citizen of the United States, residing at Richmond, county of .Contra Costa, and State of California, have invented certainf new and useful Improvements in Hows,` of which the following is a specification.

'This invention relates to plows.v

My invention relates to that class of plows having detachable shares or points and it has for its objects the provision of, first, an improved joint between the detachable share or point and the mold-board comprising an undercut, wedging, longitudinal slip connection; second, a wedging or overlapping joint between the front end of the land side and the detachable point, third, a novel combined brace and lock for the detachable whereby a quick detachable locking means is provided, bolts and nuts done away with, entry or packing of earth in the joint is prevented, and a strong wedging action is obtained by the pressure of the earth on the detachable point or share.

may so construct the extension of the mold-board with which the detachable point is engaged that a section may be removed, and for the detachable point there may be substituted an ordinary steel share, whenever such substitution is desired.

The wedging connection between the detachable share and the extension of the mold-board permits removal of the point or share, heating and sharpening thereof when desired, and compensates for any resulting shrinking of the share or distortion thereof by such heating and sharpening. Furthermore, the slip joint is such that the earth cannot enter the longitudinal portions thereof and, in addition, the joint between the point and the land side is of an improved construction which prevents entry of earth even though, on backing of the plow, the point should pull forwardly'to some extent.

My invention does away with set screws, bolts and nuts and the resulting diiliculty in detachment of parts, due to rusting of such elements.

With my invention, the manipulation of the latch will permit' the'point or share to be removed quickly and easily at any time.

I may make the land side detachable by the provision of the usual bolts or fastenings, but this is optional.

The embodiment of the invention which is set forth hereinafter and disclosed in the accompanying drawings is to be considered as illustrative, rather than restrictive, of the scope of the invention, as the latter is susceptible of various modifications within the principles thereof.

In the accompanying drawings: Figure is a rear elevation-of the complete plow with the parts in their assembled condition; Fig. 2, an edge view looking toward the rear edge of the mold-board and that of the detachable share or point, the latter being broken away to show how the latch engages it; Fig. 3, a detail perspective of the plow with the detachable point in position to be slipped into the under-cut channel; Fig. el., a detail view looking toward the face of the mold-board and the detachable share, the parts being in position for assembly; Fig. 5, a detail of the inner face of the detachable point, showing the .tapered formation of the rib, and Fig. 6 is a detail view of the pivot b'olt for the latching lever.

The base or standard is shown at l, the land side at 2, themold-board at 3, and the detachable point or share appears at 4c. The mold-board may be connected tb or braced from the standard l by any suitable brace 5.

Secured to the lower edge of the moldboard by the countersunk bolts 6 isan extension or connection piece 7 which may be formed integral with the part 8, or, said part 8 may be detachably connected to the extension or backing 7 by detachable .countersunk bolts 9. I do not limit the construction to this feature, as shown in Fig. Ai, as the parts 7 and 8 may be in one piece, but by makingthe part 8 detachable, it may be removed, if desired, and an ordinary steel share may then be fastened to the part 7 and by means of a bolt to the lower end of the brace 5, a hole 10 being provided in `the brace 5 for that purpose,said hole being not used when the improved 'detachable oint or share 4 is in use.

Bolts 11 detachably' connect the land side 2 so that the latter may 'be detached, when desired.

The lower edge l2 of the mold-board is beveled and overhangs the extension 7, forming an upper edge vofan under-cut channel 13 which contracts 0r tapers from right-to left, Fig. 4, the lower under-cut edge of the channel being shown at, le. li

thereby' provide a channel which 'tapers from the :front to the rear so as to afford the requisite wedging action in connection with the tongue or'rib 15 of the detachable point or share 4. The rib 15 tapers from the point end of the share 4 to the rear end thereof. Consequently, evenvii:l the share 4 be removed, heated and 'sharpened and shrink or become somewhat distorted from such treatment, it can, nevertheless, be easily slipped into the channel 13 and tightly wedged therein.

The forward vertical edge side 2 is under-cut or beveled at 16 to en a vcorresponding face 17 on the land. side face 18 of the point or share 4.

'When the point or share 4 is slipped into position, the beveled edges 1G and 17 come together in the manner of a slip joint and prevent the. entry of' earth at this point. Consequently, even. though the point or share 4 should slip forwardly to a slight extent when the plow is backed, neverthen less, the lap oinL forni of the parte 1G and 1'? will prevent entry of earth and clogging at this point.

Tie dove-tail formation of the rib 15, in connection with the channel 13, also pre vents the entry of earth between the parts of the joint connecting the side of the point 4- to the plow. When the share 4 is in position, the tace 19 thereof constitutes a continuation of the face 20 of the mold* board.

'lhe lower end of the brace 5 is provided with an aperture 21 and there is provided in the share 4 a corresponding aperot the land ture 22 which is adapted to come into alinement with the aperture 21 when the share or point 4 is in position. A pivoted latching lever 23 has a point 24 which is adapted toenter the openings 21 and 22 and thus secure the point 4 in position, as shown in Fig. 2. l The latching lever 23 l prefer to mount as shown in Figs. 1, -2 and 6 where 25 is a bolt passing through the mold-board, .and the brace 5, and is provided with a bifurcated end 26 which receives the lever 23 intermediate the ends of the latter, the lever being pivoted on a pin or bolt 27. A leaf spring 28 which bears against the upper end of the lever, receives the bolt '25 and is clamped against theback of the race 5 by a nut 29. On pressing the upper end of thelever 23, the vlocking part 24 becomes released from the ning 22 and the detachable point or share 4 can then be removed.

l-laving thus described rny invention, what l claim as new and desire to secure by Let ters` Patent, is

1.ln a plow, the combination with a mold-boardand an extension thereon, said extension and the lower edge ot the moldboard having over-hanging portions which,

with the extension, deiine a channel whose walls converge, of a detachable point or share having a rib of wedge form adapted to enter said channel, and means for locking the detachable point or share in position.

2. Aln a plow, the combination with a mold-board and an extension thereon, said extension and the lower edge of the moldboard having over-hanging portions which,

with the extension, deine a channel whose.

'alls converge, of a detachable point or share having a rib orA wedge form adapted to enter said channel, said point or share havingan under-cut portion .extending in a general up and down direction and adapted to engage a corresponding portion on the land side of the plow.

3. ln a plow, the combination with the mold-board and land side thereof, of an extension connected to the mold-board, said land side having an under-cut portion extending in a general up and down direction., a detachable point or share having a land side portion provided with a part adapted to overlap and engage the up and down portion of the 'land side, said share being do-- tachably engaged with the extension, and means for locking the share in position.

4. ln a plow, the combination with a .mold-board and a land side, of an extension from the lower part of the mold-board downwardly, said extension having a channel provided with under-cut walls which converge from the point end 'of the plow rearwardly, said land side being provided with a vertically extending beveled portion,

a detachable point or share provided with a vertically extending beveled portion adapted to overlap the corresponding portion on the land side, and also having a longitudinally extending tapered rib provided with walls adapted to fit the under-cut walls of the channel, and means for locking the point in position. f

5; In a plow, the combination 'with a mold-board and a land side, of an extension from the lower part of the mold-board downwardly, said extension having a channel provided with under-cut walls which converge from the point end of the plow rearwardly, said land side being provided with a vertically extending beveled portion,

a detachable point or share provided with 'a vertically extending beveled portion adapted to overlap the corresponding portion lon the land side, and also having a vlongitudinally extending tapered rib provided with walls adapted to lit the under-cut walls of the channel, 'a brace secured to the mold-board, and a pivoted lever provided with a locking part adapted to extend through an opening in thobrace to engage the detachable point.

6. In a plow, the combination with the mold-board, land side and detachable'point, of a brace carried by the mold-board, and

a pivoted spring-actuated lever carried by the mold-board having a locking portion adapted to enter an opening in the brace and to engage the detachable point.

7. In a plow, the combination With the mold-board and land side, of a brace connected to the mold-board, a detachable point or share, a bolt passing through the moldboard and the brace and provided With a bifurcated end, a lever pivoteflin the bifur cated end of the bolt and provided With a locking member adapted to enter a hole in the brace and to engage the detachable point, a spring action on said lever, and a nut on the bolt Which engages the spring.

In testimony whereof, hereunto ax my signature.

EDGAR W. BENSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

